Flange Knife Gate ValveHuachao Flange Knife Gate Valve is designed with lower operation torque, full bore, high cv ... pulp fiber medicine industry etc. It can be equipped with manual, pneumatic, electric or hydraulic actuated remote control ... Valve, China, factory, supplier, cheap, manufacturerMetal Seat Flange Knife Gate ValveHuachao Metal Seat Flange Knife Gate Valves are deigned as metal to metal seat ...